Change entity operation title

Closes #3524913

simple_entity_merge.module

@@ -42,7 +42,7 @@ function simple_entity_merge_entity_operation(EntityInterface $entity) {
   if (\Drupal::currentUser()->hasPermission('execute simple_entity_merge')) {
     if ($entity->hasLinkTemplate('simple_entity_merge-execute')) {
       $operations['simple_entity_merge'] = [
-        'title' => t('Simple Entity Merge'),
+        'title' => t('Merge'),
         'weight' => 100,
         'url' => $entity->toUrl('simple_entity_merge-execute'),
       ];